Mold ing-machine



3 Sheets-Sheet 1.

(No Model.)

J. P. BROADMEADOW.

Moldi'n.g....Ma.chine.

No. 236,301; Pafe'nted Jan. 4,1881

FIELE.

N.PETER. FHOTD-LITHOGRAPMER. WASHINGTON. D c.

(No Model.) 3 Sheath- Sheet a.

J. P; BROADME'ADOW.

Molding-Machine. No. 236,301 A Patented Jan. 4,1881,

FIG--7- IIIIIIIIIIIIIIIIIIIII'IIIIII'IHI'II'IIII'LI.IIIIIIIIIIIIIIIIIIIIIIIIIIIITIJI \X/JTNEEEEE': INVENTDR UNITED STATESPATENT @FFICE.

JOHN P. BROADMEADOW', OF BRIDGEPORT, ASSIGNOR TO PHILO H. SKID- MORE,NEWTOWN, CONNECTICUT.

MACHINE.

SPECIFICATION forming part of Letters Patent No. 236,301, dated January4, 1881.

* Application filed September 4,1880. (No model.)

To all whom it may concern Be it known that 1, JOHN P. BROADMEADOW ofBridgeport, in the county of Fairfield and State of Connecticut, haveinvented an Improvement in Molding-Machines for Snap- Flask Molding; andI do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, forming part of this specification.

My invention has for its. objects the supply of an easily-manipulatedand an accurateworking machine, and one inwhich the operation cannot beobstructed by clogging with sand.

In such machines as heretofore constructed the working parts areunprotected from the sand, which, falling during the process of molding,clogs the working parts, and thus '20 emba-rrasses or interrupts theoperation. Also,

in the snap-flasks heretofore used care has to be employed to whollyremove sand from the upper edge of the drag before applying the bottomboard thereto prior to turning over the drag. These defects are removedand ease in manipulation secured by my invention, which consists,chiefly, in the inclosure of the principal working parts of the machinein a box v which excludes sand, and in forming the drag with edges sothin that sand will not remain upon them, but will roll off by its owngravity; and in supplying means foreasily and accurately reversing thedrag after the sand has been pressed therein.

In the drawings, Figure 1 represents a front View, and Fig. 2 a top orplan view, of a machine constructed in accordance with my invention.Fig. 3 is a side view, and Figs. 4, 5, and 6 are details illustratingthe construction of the drag, cope, and cope-board. The construction ofthe match-board is shown in Fig. 1 in connection with other parts of themachine. Fig. 7 is a partial vertical section of the machine, made onthe line or w in Fig. 2.

The flask is of the same depth as the mold, and is represented'in sideelevation, put together and resting on the bottom-board in Fig. 4, a topview of the same being shown in Fig. 5, and a cross-section of the dragin Fig.

6. The cope-board is lettered a; the cope,b the drag, c the bottomboard, d.

At 0 e in Fig. 1 is shown the match-board e ,representin g the battensof the same. When the drag c is placed in position on the matchboard thetotal height of the two is the same as that of the flask with thecope-board removed and standing on the bottom board, as shown in Fig. 4,except that in this figure the cope-board is shown as placed on thecope. The match-board is similar to that used in ordinary practice,except that it has a rod, f, attached to the battens 6, extending atright angles across the rear part of the space between said battens.

The drag a has its upper edge made so thin 6 that sand cannot lie uponit. This is accomplished either by beveling, as shown in Fig.

6, or by lining the drag with a thin metallic plate, g, one edge ofwhich projects from the wooden part, as shown in Fig. 1.

The cope is provided with guide-plates h, in each of which is a hole,2'. The cope-board is provided with pin-plates j, the pins being bent atright angles, and corresponding in position with the holest' when thecope-board is on the cope.

Pins k are inserted into or attached to the side edges of thematch-board, near the front corners, which pins assist in themanipulation of said match-board and the drag, as hereinafter described.

The other parts of the apparatus are as follows: I

A is a hollow standard, in the lower part of which are provided bearings for the rock-shaft 8 5 B,whichisope'ratedbythe hand-lever C. From therock-shaft A projects a short lever, D. Motion is communicated or'pressure transmitted from the lever D to the platen or table E of themachine by means of the bar F. 0n the go inside of the hollowstandardare logs with guide-holes, in which work guide-rods G,projecting downward from the platen or table E. When the hand-lever ismoved in-t-he direction indicated bythe arrow the platenor table 5 E israised. I

H is the top-plate of the machine.

An arm, K, projects from the hollow standard at an angle of forty-fivedegrees from the dotted line a" w, in Fig. 2.

L is a strengthening-rib which extends diagonally across the top plateand has an extension at each end, as shown in Figs. 1, 2, and 3. One ofthese extensions is pivoted, by the stout rod J, to the arm K. From theother extension descends a stout rod, J, which has at its lower end anut, boss, or button, M.

N is a bracket or arm projecting from the hollow standard from a pointdiametrically opposite the arm K. In the outer extremity of the arm N isa slot or recess, 0", into which, when the top plate, H, is turned inthe direction of the arrow in Fig. 2, the rod J is brought. In thisposition the nut, boss, or button M bears against the under side of theextremity of the arm N and supports the top plate against upwardpressure in conjunction with the rod J.

To the lower and front part of the hollow standard is pivoted arock-bar, O. A spring, P, is employed to press this bar toward thehollow standard. The rock-bar O has attached to it, near its upperextremity, a cross-bar, Q. To this cross-bar are pivoted sliding rods1%, which play freely in slots S formed in the hollow standard. The rodsit have formed thereon hooks or stops It, Fig. 3, which limit the motionof the rock-bar O. In the upper extremity of the rock-bar O is a recessor notch, n, Fig. 3.

To the rod J is pivoted a sweep, T, which moves in a horizontal plane,like the top plate. The height of this sweep is regulated by theadjustable collar W.

To the lower end of the rod J is attached a stop, V, which serves tosupport the handlever when the latter is in the position shown in Fig.3.

Having thus described all the parts of my machine, it will be seen thatthose parts liable to be clogged with sand are inclosed in the hollowstandard, and thus clogging is prevented.

The operation of the machine is as follows: In the commencement theparts should be in the position shown in Fig. 2, the hand-lever being inthe position shown in Fig. 3. The match-board e c is then placed on theplaten or table E, with the rod f to the rear. The drag a is then placedon the match-board in the position shown in Fig. 1that is to say, withthe thin edge upward. The patternp is then placed on the match-board,and the drag is filled with sand in the usual manner. The sweep T isthen moved in the direction of the arrow, Fig. 2, and over the drag,which operation removes the superfluous sand, leaving just sufficientsand to fill the drag properly when compressed. The bottom board, 01, isthen laid upon the sand. The top plate is then moved, as indicated bythe arrow in Fig. 2, whereby the nut, boss, or button M is brought underthe end of the arm N, the rod J at the same time entering the slot insaid arm. The hand lever is then moved, as indicated by the arrow inFig. 3. This, through the intermediate mechanism, presses the table Eand the match-board and drag upward, which compacts the sand uniformlyin the drag. The top plate is then moved back out of the way, and theoperator places his thumbs on the pins K, and the fingers of each handon the bottom board to hold the latter in place, draws the match-board,the drag and its contents, and the bottom board forward, till the rod fengages the notch or recess a, in the rock-bar 0, said notch being on alevel with said barf. Said notch now forms a support for the rodf, andsaid rod acts as a pivot on which to reverse the parts so drawn forward.To reverse the parts the match-board, drag and its contents, and bottomboard are drawn farther forward till they reach the position shown indotted outline in Fig. 3, and are then turned over on the rod f as apivot, as indicated by the dotted curve and arrow in Fig. 3. During theentire operation of drawing forward and reversing the hands grasping theparts, as above described, do not relinquish their hold. When the partsare so IGX'GI'SUd they are slid back again upon the table or platen E,with the bottom board on the under side, the matchboard is removed, andthe cope placed upon the drag. The cope is now filled and heaped up withsand in the usual manner, the surplus sand stricken oft, as abovedescribed, the copeboard placed on the cope, the top plate again movedforward, and the hand-lever brought into play to press the sand into thecope. This completes the mold.

The construction and operation of my invention having thus been fullydescribed, what I claim as myinvention, and desire to secure by LettersPatent, is as follows:

1. The combination of the platen or table of a molding-machine, a hollowstandard for supporting and shielding the working parts, a lever foroperating said platen, and intermediate mechanism connecting said leverand platen and guiding the platen, said intermediate mechanism beinginclosed within said hollow standard, substantially as and for thepurpose specified.

2. The combination of the rock-bar O, pivoted to the hollow standard andhaving the notch or recess a in its upper extremity, and stops whichlimit the motion of said rock-bar, with the match-board having therodffor engagement with said rock-bar in said notch, and forming a pivoton which the match-board and parts supported by it may be reversed,substantially as described.

3. The combination of the rock-bar O, pivoted to the hollow standard,and a stop or stops for limiting its movement, substantially asdescribed.

4. The combination of the rock-bar O, pivwood, said metal lining beingrigidly attached oted to the hollow standard, and a stop or to thewooden part of said drag, substantially 10 stops which limit the motionof the rock-bar, as and for the purpose specified. and a spring fordrawing said rock-bar toward 5 said hollow standard, substantially asde- JOHN BROAD MEADOW scribed. Witnesses:

5. A wooden drag lined with thin metal, the EDWARD H. WALES, uppermargin of which projects above the CHAS. M. HIGGINS.

